Wordpress.com Suffers Largest DDoS Attack In Its History

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You have no idea how hard it was to get this post up, as WordPress.com, our blog host, is currently under a denial of service attack. It’s been almost impossible to access the TechCrunch backend for the past 10 minutes (everything seems to be stable now) and users have been receiving a “Writes to the service have been disabled, we will be bringing everything back online ASAP” error message.

From the VIP blog post:

WordPress.com is currently being targeted by a extremely large Distributed Denial of Service attack which is affecting connectivity in some cases. The size of the attack is multiple Gigabits per second and tens of millions of packets per second.

We are working to mitigate the attack, but because of the extreme size, it is proving rather difficult. At this time, everything should be back to normal as the attack has subsided, but we are actively working with our upstream providers on measures to prevent such attacks from affecting connectivity going forward.

We will be making our VIP sites a priority in this endeavor, and as always, you can contact us via xxxxx@wordpress.com for the latest update. We will also update this post with more information as it becomes available

WordPress did not mention the origin of the attack (DDoS =! Anonymous) and I have contacted founder Matt Mullenweg for more information. WordPress.com currently serves 18 million publishers, including VIPs TED, CBS and TechCrunch, and is responsible for 10% of all websites in the world. WordPress.com itself sees about 300 million unique visits monthly.

Update: Automattic and WordPress founder Matt Mullenweg tells us that this is the largest attack WordPress.com has ever seen, and is likely to be politically motivated:

“There’s an ongoing DDoS attack that was large enough to impact all three of our datacenters in Chicago, San Antonio, and Dallas — it’s currently been neutralized but it’s possible it could flare up again later, which we’re taking proactive steps to implement.

This is the largest and most sustained attack we’ve seen in our 6 year history. We suspect it may have been politically motivated against one of our non-English blogs but we’re still investigating and have no definitive evidence yet.”